Homework Statement
A tire placed on a balancing machine in a service station starts from rest and turns through 4.9 revolutions in 1.0 s before reaching its final angular speed. Calculate its angular acceleration.
I need my answer in
rad/s^2
Homework Equations
a=w/t
1rev= 2n rad...
Homework Statement
A skier of mass 67 kg is pulled up a slope by a motor-driven cable.
(a) How much work is required to pull him 40 m up a 30° slope (assumed frictionless) at a constant speed of 1.7 m/s?
m= 67kg
Delta y= 40m
Theta= 30 degrees
v= 1.7m/s
Homework Equations
I know...
[SOLVED] Kinetic Energy Question
Homework Statement
A 7.0 kg bowling ball moves at 2.35 m/s. How fast must a 2.40 g Ping-Pong ball move so that the two balls have the same kinetic energy?
m1= 7.0kg
v1= 2.35m/s
m2= .0024kg
v2=?
Homework Equations
I know that:
KE= 1/2mv^2
The...