An 80 kg person standing on a 20 kg plateform is suspended by a rope passing over a stationary pulley that is free to rotate. The other end of the rope is held by the person. The masses of the rope and pulley are negligible. You may use g=10 m/s/s. Assume that friction is negligible and the...
An apparatus to determine coefficients of friction is shown above. The box is slowly rotated counterclockwise. When the box makes an angle (Theta) with the horizontal, the block of mass m just starts to slide, and at this instant the box is stopped from rotating. Thus at angle(Theta), the block...
Mech 3. Sphere. PLEASE help...
A particle of mass m slides down a fixed, frictionless shpere of radius R, starting from rest at the top.
(a) in terms of m, g, R, and (theta), determine each of the following for the particle while it is sliding on the sphere.
i. the Kinetic energy of the...
i thought v = \frac{\Delta\nu}{\Delta\chi}
right? change in distance over change in time, but the distance would be a quarter of the circumference, and the change in time is 20 secs. so... 20 times 200?
A football is kicked at 20m/s from ground level. When the launch angle is 30 degrees, the football will travel a horizontal distance of about_____?
would this be projectile motion?
which equation would you use?
An airplaine is flying North at 200m/s. It make a gradual turn at constant speed. 20 secs later, it completes the turn and is moving East at 200 m/s. What is the magnitude of its average acceleration while making its turn?
What does it mean by magnitude of Acceleration?