7. a) Find the work done when a torque of 3.5 N m moves through an angle of 2 radians. b) Find the torque when the work done to move through an angle of radians is 3 J.
An 80kg woman jumps from a wall and lands stiff-legged in soft sand. The woman's downward speed just as she touches the sand is 6m/s. She is stopped after sinking 0.05m into the sand. Calculate the net force on the woman while she is being stopped by the sand. Round to nearest whole number
A bowling ball weighing 68.0 N initially moves at a speed of 3.00 m/s. How long must a force of 38.0 N be applied to the bowling ball to stop it?
if you toss a ball to your friends when the ball reaches its maximum altitude it’s vertical acceleration is what? is it 0 m/s or -9.81?
batting practice a baseball player changes the angle at which the ball is hit from 20 degrees to 40 degrees what happens to the range of the baseball
34. An object with mass 5.00 kg is being pushed up an inclined plane with a constant force F. The plane makes an angle of 30.0with respect to the horizontal . The object is moving with constant velocity . The coefficient of kinetic friction between the object and the surface is 0.300 . What is the magnitude of this force ?
One wants to change the notational prequency of a plywheel from 3.5 1/s to 9.0 1/s during 5.0 sec. How much moment on average is needed to do this if the moment of jnertia for this flywheel is 12 kgm^2?
4. Three forces of equal magnitude IFI act on an object as shown below. Then the body a) Does not accelerate c) Accelerates towards south east b) accelerates towards North West d) accelerates towards north east
