Category: Uncategorized

An Atwood machine consists of two masses, connected by a string, hanging over a massless, frictionless pulley as shown. There are no additional forces. What is the maximum acceleration that can be seen in this system?

The three blocks shown are released from rest and are observed to move with accelerations that have a magnitude of 1.5 m/s2. What is the magnitude of the friction force on the block that slides horizontally? Disregard any pulley mass or friction in the pulley and let the mass of the small block be  = 2.0 kg. The two other blocks have double this mass.

A pop gun uses a standard spring compressed by an amount to fire a projectile of mass to a height by firing at a velocity of . If we would like to have the projectile go one third as high, what spring compression is required?

A ball is dropped from a height on a frictionless loop-de-loop of radius = [R] m. What is the smallest that can be where the ball makes it around the track without losing contact? Please give your answer in units of m.

Suppose you are talking by interplanetary telephone to a friend, who lives on the Moon. He tells you that he has just won a newton of gold in a contest. Excitedly, you tell him that you entered the Earth version of the same contest and also won a newton of gold! Who is richer?

In the arrangement shown here, = [m1] kg, = [m2] kg, and the pulley and rope are essentially massless and frictionless. We release the system from rest when is a distance = [h] cm above the table. (Q27 answer 2 pts, Q28 work 5 pts) What is the speed of at the instant it hits the table? When hits the table, the rope breaks. (Q29, 7 pts) To what maximum height above the table does rise to through the course of its motion? (Q30, 7 pts) At what speed does then hit the table? To continue, please enter the speed of hitting the table (part a).

Forces acting on an object will cause an acceleration.

If a flea can jump straight up to a height of = [h] cm, how long is it in the air? Please give your answer in units of ms.

A block of ice with mass = [m] kg is released from rest at the top of a ramp of length

Shown here is a plot of velocity as a function of time. What is the average acceleration over the first 5 seconds?