i have two problems here where i have to find individual forces.
problem 1: i can't find the normal force. how would i do it?
<img src=http://img1.photobucket.com/albums/0903/badboyben03/p01.png> [Broken]
i tried 2123.328N *(2825.008-701.68) and also tried 701.68N but neither of them...
An athlete whirls a 6.50-kg hammer tied to the end of a 2.0-m chain in a horizontal circle. The hammer moves at the rate of 1.1 rev/s.
What is the centripetal acceleration of the hammer?
What is the tension in the chain?
a 70 kg box s pulled by a 400 N force at an angle of 30 degrees to the horizontal. The force of kinetic friction is 75 N.
determine the acceleration.
heres what i did
first i found the x-component using (686)sin30 and it comes out to be 343.
Then i use the formula where the sum...
The velocity of a 620-kg auto is changed from +11.0 m/s to +48.0 m/s in 66.0 s by an applied, constant force.
What change in momentum does the force produce?
What is the magnitude of the force?
if an object is in equilibrium, then which of the following must be true?
(i know net force has to be 0, forces are balanced, and acceleration is 0. it doesn't always mean it is at rest. i think there's still one or two more "must be trues" in the list.)
a. all individual forces acting...
if an object is in equilibrium, then which of the following must be true?
(i know net force has to be 0, forces are balanced, and acceleration is 0. it doesn't always mean it is at rest. i think there's still one or two more "must be trues" in the list.)
a. all individual forces acting...
which ones are true?
a. the mass of an object on the moon will be the same as its mass on Earth.
b. the weight of an object on the moon will be the same as its weight on Earth.
c. the mass and weight of an object are the same thing
d. the weight of an object is the force of gravity...
which ones are true?
a. the mass of an object on the moon will be the same as its mass on Earth.
b. the weight of an object on the moon will be the same as its weight on Earth.
c. the mass and weight of an object are the same thing
d. the weight of an object is the force of gravity...
Sally applies a horizontal force of 520 N with a rope to drag wooden crate across a floor with a constant speed. The rope tied to the crate is pulled at an angle of 84.5°
How much force is exerted by the rope on the crate and what work is done by the floor through force of friction between...
thanks!
A force of 45 N accelerates a 6.0-kg block at 7.0 m/s2 along a horizontal surface.
How large is the frictional force and what is the coefficient of friction?
i need help with figureing out this problem
A sled of mass 57 kg is pulled along snow-covered, flat ground. The static friction coefficient is 0.30, and the sliding friction coefficient is 0.10.
What force will be needed to start the sled moving?
Once moving, what total force must be...
oops
oh, I am sorry. maybe i should've been more specific. If I was just givin the force, the mass and acceleration. I'm not given the coefficient of friciton or the frictional force.
what formula do i need to solve this problem?
A sled of mass 57 kg is pulled along snow-covered, flat ground. The static friction coefficient is 0.30, and the sliding friction coefficient is 0.10.
What does the sled weigh?
how can i find the answer w/o knowing the mass?
A student stands on a bathroom scale in an elevator at rest on the 64th floor of a building. The scale reads 818 N. As the elevator moves up, the scale reading increases to 950 N, then decreases back to 818 N. Find the acceleration of the elevator.
i kinda do. imma have to probably get a tutor. i don't really get what my teacher is saying, but why is the answer I am getting wrong? i got 37240N as the answer.
can someone give me the formula needed to work this problem?
A 4655-kg helicopter accelerated upward at 8 m/s2. What lift force is exerted by the air on the propellers?
If I am given the the weight of someone at 91 kg, and he's on a place that's (g=9.782m/s/s), i know to the weight (N), i multiply the 91kg and 9.782 m/s/s, but how do you find the mass of him in kg?
can someone give me the formula needed to do this problem?
"a karate strike hits wooden blocks, the hand undergoes an acceleration of -6500 m/s2. Medical data indicates the mass of the forearm and hand to be about 0.8 kg. What is the force exerted on the hand by the blocks?"
am i supposed...
can someone give me the formula needed to do this problem?
"a karate strike hits wooden blocks, the hand undergoes an acceleration of -6500 m/s2. Medical data indicates the mass of the forearm and hand to be about 0.8 kg. What is the force exerted on the hand by the blocks?"
am i supposed...
hmmm
ummm...before you talk **** about me, i just want to let you know this isn't my homework. i haven't learned this yet. I am still on acceleration and velocity...so yeah.