Recent content by mullets1200

Homework Statement Okay, so i am reviewing for an exam next week and I've been looking at my online homework and i ran across this problem and I cannot remember how I solved it: You and your friend Peter are putting new shingles on a roof pitched at 23 degrees. You're sitting on the very...

oh! i don't know why i didn't catch that. thank you so much!

Homework Statement The 1990 kg cable car shown in the figure descends a 200-m-high hill. In addition to its brakes, the cable car controls its speed by pulling an 1780 kg counterweight up the other side of the hill. The rolling friction of both the cable car and the counterweight are...

ah! got it. thank you so much!

Homework Statement A 1.50 m-long, 480 g rope pulls a 8.00 kg block of ice across a horizontal, frictionless surface. The block accelerates at 2.40 m/s^2. How much force pulls forward on (a) the ice, (b) the rope? Homework Equations F=m*a The Attempt at a Solution for A i got the...

for the man it is: T-mg+F=ma for the block: Mg-T-F=Ma is that correct?

Homework Statement A 60kg man is climbing a rope that is connected to a pulley and on the other side the rope is connected to a 100kg block. what is the tension in the rope? Homework Equations T-mg+F=ma The Attempt at a Solution this was my attempt: Mg-T-F=Ma; adding the equations...

Homework Statement A hand presses down on a book. Is the normal force of the table on the book larger than, smaller than, or equal to mg? (m is the book mass) Homework Equations F+mg The Attempt at a Solution I want to say the normal force is equal to mg. Am i correct?

Homework Statement You and your friend Peter are putting new shingles on a roof pitched at 23degree . You're sitting on the very top of the roof when Peter, who is at the edge of the roof directly below you, 5.4 m away, asks you for the box of nails. Rather than carry the 2.3 kg box of nails...

Homework Statement A projectile's horizontal range on level ground is R =v0^2 sin2(theta)/g. At what launch angle or angles will the projectile land at half of its maximum possible range. The Attempt at a Solution So what i did was: Half the range occurs when sin(2θ) = 0.5 So 2θ =...

1. The components of a vector will be the same no matter what coordinate system is used to express that vector. True or False 2. The magnitude of the displacement vector from A to B can never be less than the distance from A to B, but it can be greater than that distance. True or false My...

Equations: I think you use the equation: r=Vit+.5a(t)2 Im not sure where to start though that is the problem

Homework Statement A 1000kg weather rocket is launched straight up. The rocket motor provides a constant acceleration for 16s, then the motor stops. The rocket altitude 20s after launch is 5100m. There is no air resistance. Questions: What was the rocket's acceleration during the...

Homework Statement David is driving at a steady 26.0m/s when he passes Tina who is sitting in her car at rest. Tina begins to accelerate at a stead 2.20 m/s2 at the instant when david passes. Questions to answer: 1) How far does Tina drive before passing David? 2)What is her speed...