A circular hoop of mass m, radius r, and infinitesimal thickness rolls without slipping down a ramp inclined at an angle theta with the horizontal. View Figure
PART A. What is the acceleration of the center of the hoop?
Express the acceleration in terms of physical constants and all...
hi,
i am interested in finding a website which has lots of questions (and solutions) on Newtonian mechanics to test my knowledge.
things i had in mind include applications of F=ma,inclined planes, tension on ropes,springs etc.
thanks
the formula for the IMA for an inclined plane is 1/sin(theta)...right? But what if the angle was zero (which would mean it is not an inclined plane), then you wouldn't be able to divide by zero...so how would you get the IMA if the angle was zero?
I am very very confused about this...any help...
[SOLVED] Coefficient of friction on an inclined plane
Homework Statement
The problem I have is to determine the coefficient of kinetic friction between two wooden objects, a block and a ramp, using the fewest measurements possible. The initial velocity will be 0. I can measure the angle of...
An object rolls down a smooth plane (whose angle and length are given) starting from rest. At the end of the plane it reaches horizontal rough surface, it rolls again on this surface and comes to rest. Given the friction coefficient how do we calculate the distance traveled by the object on...
Homework Statement
A stunt driver wants to make his car jump over 8 cars parked side my side below a horizontal ramp. (a) With what maximum speed must he drive off the horizontal ramp? The vertical height of the ramp is 1.5m above the cars and the horizontal distance he must clear is 20m. (b)...
Homework Statement
a Mess of 5kg is being hauled up a smooth invlined place at 30 degree to the horizontal with an acceleration of 1.5ms^-2 by mean of a string parallel to the incline:
a) What is tension in the string
Homework Equations
Fnet= ma
Rules of right angled triangles (SOC CAH...
Homework Statement
a block with mass m1= 2 kg, and a block of mass m2 = 6kg are connected by a massless string over a pulley in the shape of a solid disk having radius R = .25m and mass M = 10 kg. These blocks are allowed to move on a fixed wedge of angle pheta = 30 degrees. the coefficent of...
Homework Statement
http://img229.imageshack.us/img229/7987/scanik8.jpg
the ball rolls at a constant speed, fast enough to travel straight off the ledge and eventually lands on the inclined plane. The task is to derive an equation for d as a function of v (the initial horizontal speed of the...
[SOLVED] Object Traveling Up an Inclined Plane
Homework Statement
In a circus performance, a monkey is strapped to a sled and both are given an initial speed of 2.0 m/s up a 19.0° inclined track. The combined mass of monkey and sled is 16 kg, and the coefficient of kinetic friction between...
Homework Statement
I am having some difficulties finding out the force of friction for an inclined plane. If we know the mass of the object, the angle of the inclined plane, and the acceleration, how to we find Ff?
I know how to draw the diagrams, but I can't seem to find what force of...
Homework Statement
A block of a certain material begins to slide on an inclined plane when the plane is inclined to an angle of 11.86o. If a solid cyclinder is fashioned from the same material, what will be the maximum angle at which it will roll without slipping on the plane (in degrees)...
I have this math problem for school that I need help with
A ball is rolling down an inclined plane. The equation I have is y = .165x^2 + .997x + .845 where y is the distance traveled and x is the time taken
I want to predict the distance it has rolled in 2 days, which I can do
but what...
Homework Statement
a 1meter board is inclined at 10 degrees with a height of .3 meters. a block with mass of 122.5g is placed at the bottom connected to a string which is connected to a pulley at the top. if a weight of 50g is hung from the pulley and the block moves with constant velocity...
[SOLVED] Magnetic torque on sphere on inclined plane
Homework Statement
a nonconducting sphere has mass 80 g and radius 20 cm. a flat, compact coil of wire with 5 turns is wrapped tightly around it, with each turn concentric with the sphere. the sphere is placed on an inclined plane that...
A block of mass m is at rest on an inclined plane that makes an angle of 30º with the
horizontal, as shown in the figure. Which of the following statements about the force of
static friction is true?
A) fs > mg D)fs = mg sin 30º
B) fs > mg cos 30º E) None of these statements is true.
C) fs...
Homework Statement
A block slides down a frictionless plane having an inclination of = 12.2° (Fig P5.22). The block starts from rest at the top and the length of the incline is 2.85 m.
Homework Equations
F=ma
xf=xi+vit+1/2at^2
The Attempt at a Solution
i tried to solve this by...
[SOLVED] inclined plane problem
Homework Statement
A 3.4kg bundle starts up a 30o incline with 198J of kinetic energy. How far will it slide up the plane if the coefficient of friction is 0.26?
Homework Equations
Work(total)=.5mv(final)^2 - .5mv(initial)^2
The Attempt at a...
Homework Statement
A woman pushes her 150kg motorcycle up a slope of 5 degrees with a constant speed of 2 m/s. She achieves this by exerting a force on the bike of 450N parallel to the slope. What is the magnitude of the frictional force acting on the bike?
Homework Equations
a=...
[b]1. On an inclined surface a cylinder can roll as long as the surface has friction. In order to stop it rolling one can apply a force opposing in direction of the surface thus cancelling the torque effect of friction force.
I understand if that force is applied tangential(not necessarily but...
So I was watching some of those physics videos posted in schoolwork board, and although he probably didn't make an error here, I don't think I understand it.
Here's the pictues. I'll elaborate after it so you guys know what I'm talking about...
[SOLVED] Inclined Plane Problem
Homework Statement
A box is accelerating down an inclined plane at a rate of 2m/s/s. If the plane is angled at 40degrees, what is the mass?
Homework Equations
a=F net/m
The Attempt at a Solution
I have absolutely no idea how to go about solving this...
Homework Statement
you push a 325 Newton trunk up a 20 degree inclined plane at a constant velocity by exerting a 211 Newton force parallel to the planes surface.
a. what is the component of the trunks weight?
b. what is the sum of all the forces parallel to the planes surface?
c. what...
[SOLVED] PHYSICS. friction and the inclined plane. PLEASE HELP! i don't understand =\
Homework Statement
a skier stands at the top of a slope. the skier is able to remain stationary on a horizontal surface without using her poles. she can remain stationary until there is an incline of 6...
Homework Statement
Given a isosceles triangle with base 1.32 meters and other sides unknown; Given rectangle with base 1.32 meters. These polygons are on an incline of 24 degrees. What are the maximum height of the rectangle and the maximum side lengths of the triangle (not the base) without...
Homework Statement
A block of mass 2kg is on an inclined plane and held steady. The coefficient of static friction u between the block and the plane is 0.5. Determine whether or not the block moves when released if the angle the plane makes with the horizontal is
(a) 20 degrees...
Homework Statement
A 710 kg car drives at a constant speed of 23 m/s. It is subject to a drag force of 500N. What power is required from the car’s engine to drive the car
a. on a level ground?
b. up a hill with a slope of 2.0 0?
Homework Equations
P=Fv
The Attempt at a...
[SOLVED] Cart on an inclined ramp, with rebound
A 500 g cart is released from rest 1.0 m from the bottom of a frictionless, 30° ramp. The cart rolls down the ramp and bounces off a rubber block at the bottom. The figure (below) shows the force during the collision.
After the cart bounces...
Projectile motion with friction on an inclined plane -- PLEASE HELP!
Homework Statement
A 2.0 kg wood block is launched up a wooden ramp that is inclined at a 35* angle. The block’s initial speed is 10m/s. (Given that μk = 0.20)
a. What vertical height does the block...
Homework Statement
A box of mass, m, is on a plane inclined at an angle, q, relative to the horizontal. The coefficient of kinetic friction between the box and the incline is uk, and the body is accelerating down the incline. What is the net force on the body?
The Attempt at a Solution...
Homework Statement
A box of textbooks of mass 25.0 kg rests on a loading ramp that makes an angle "a" with the horizontal. The coefficient of kinetic friction (muk) is 0.230 and the coefficient of static friction (mus) is 0.340.
a) As the angle "a" is increased, find the minimum angle at...
Homework Statement
A block with mass m = 23.4 kg slides down an inclined plane of slope angle 31.1 o with a constant velocity. It is then projected up the same plane with an initial speed 1.50 m/s. How far up the incline will the block move before coming to rest?
Homework Equations...
Homework Statement
A cart slides down an inclined ramp at is 1.44m long. The height of the ramp is .10m. The angle of incline of the ramp is not given. The work done by the friction is -.06. I need to find the friction force.
Homework Equations
Work done by the friction = Friction force * d...
Homework Statement
M1 and M2 are two masses connected as shown. The pulley is light and frictionless. Find the mass M1, given that M2 (6.50kg) accelerates downwards at 3.27m/s2, that the angle theta is 20.0o, and that muk is 0.340.
Homework Equations
F=ma
The Attempt at a...
Homework Statement
There is a 5.0kg block sliding 1.5m down an inclined plane 12 degrees from the horizontal. the coefficient of kinetic friction is 0.310. Whats is the work done on the block by friction and gravity?
Homework Equations
F=ma, W=fd, fk=uk*N
The Attempt at a Solution...
Homework Statement
A block of mass m resting on a 20 degree slope. The block has coefficients of friction mu_s =0.80 and mu_k =0.50 with the surface. It is connected via a massless string over a massless, frictionless pulley to a hanging block of mass 2.0 kg.
What is the minimum mass m that...
Homework Statement
(a) A box is placed on an frictionless inclined plane with an angle of 18° from the horizontal. The box has a mass of 35 kg, what is the magnitude of the acceleration of the box along the inclined plane?
(b) What magnitude of force would you need to apply to the box in...
My main question:
Given an angle of incline, x, how can you find the coefficients of static and kinetic friction? Is it possible?
My homework problem is:
Someone wearing leather shoes is standing in the middle of a wooden plank. One end of the board is gradually raised until it makes an...
[SOLVED] Force Exerted?
A child holds a sled on a frictionless snow covered hill, inclined at a 34 degree angle
if the sled weighs 73N find the force exerted on the rope by the child. answer in units of N
and find the force exerted on the sled by the hill, answer in units of N
This one the last questions on my mechanics paper, its hard to visualize without drawing a diagram i found, but i still can't solve it
1.
A tractor of 6000kg approaches a slope at arcsin(0.05) to the horizontal. The non-gravitational resistance to motion on this slope is 2000N. The tractor...
Homework Statement
A block weighing 73.7 N rests on a plane inclined at 24.3° to the horizontal. The coefficient of the static and kinetic frictions are 0.28 and 0.11 respectively.
A.) What is the minimum magnitude of the force F, parallel to the plane, that will prevent the block from...
Homework Statement
The velocity of a 2.10 kg block sliding down a frictionless inclined plane is found to be 1.13 m/s. 1.00 s later, it has a velocity of 4.13 m/s. What is the angle of the plane with respect to the horizontal?
2. The attempt at a solution
I drew a diagram and...
Homework Statement
A block of ice with mass 2.00kg slides 0.750m down an inclined plane that slopes downward at an angle of 36.9degrees below the horizontal.
f the block of ice starts from rest, what is its final speed? You can ignore friction.
Homework Equations
F=ma, trig...
Homework Statement
A block of ice with mass 2.00kg slides 0.70m down an inclined plane that slopes downward at an angle of 30degrees below the horizontal. If the block of ice starts from rest, what is its final speed?
Homework Equations
W = 1/2(m)(v2)^2 - 1/2(m)(v1)^2
The Attempt at a...
Homework Statement
the 2 kg ball is fired from point a with an Vo of 10 m/s up the smooth inclined plane. The angle is 37 degrees, it gives me the planes dimentions the ball rolls on, it is 1.5 m high and 2 m wide. It asks the distance in the x it lands. Also the velocity with which it...
Homework Statement
An Inclined plane with an inclination of \theta and a mass M has a body of mass m on top of it which is attached to a string; the string is light and passes over a pulley on top of the inclined plane and continues till it is firmly attached to a vertical wall.The friction...
Homework Statement
Does kinetic friction and static friction act upon a car traveling downhill (without acceleration by the car)?
Homework Equations
The Attempt at a Solution
Is it kinetic because the wheels rub against the surface and the car is in motion? But is it also static...
Homework Statement
1 An object is pushed up a smooth incline of 30 degrees with a speed of 4m/s. In seconds, how long will it take before the object stops and reverses direction?
Vf= Vo - at
Vf= Vo - at
0 = 4 - (9.8)t
t = 0.41s
I know this is wrong because the angle isn't accounted for, but...
Homework Statement
You are designing a delivery ramp for crates containing exercise equipment. The crates weighing 1490 N will move at a speed of 2.10 m/s at the top of a ramp that slopes downward at an angle 25.0°. The ramp exerts a kinetic friction force of 540 N on each crate, and the...