A 80 kg container is lifted by a rope. The rope is guaranteed not to break if the tension is up to 800 N. The container started at rest, and after 2 seconds is moving at 3.0 m/s. Is the rope in danger...

#### Latest answer by

The coefficient of friction is 0.5 and the chess piece's mass is 0.02 kg. Find the acceleration of the chess piece.

#### Latest answer by

What is the smallest force F exerted eastward and upward at an angle of 350 with the horizontal that can start the box in motion?

#### Latest answer by

a.) What is the coefficient of static friction? b.) The block has a mass of 5 kg. What is the force of friction on it before it begins to slip?

#### Top voted answer by

a.) What is the smallest force parallel to the incline needed to keep the object from sliding down? b.) What parallel force is required to keep the object moving up the incline at a constant...

#### Latest answer by

How much work does F do in moving the cart 3.0 m?

#### Latest answer by

From the 2 m mark to the 52 m mark?

#### Answered by

A 10 kg mass on a horizontal friction-free table is accelerated by a string attached to 12 kg mass hanging vertically from a pulley. a) What's the force due to gravity on the 12 kg hanging mass? b)...

#### Latest answer by

How much work to lift it?

#### Answered by

A person with mass of 55 kg is standing on a scale in an elevator. The elevator is moving up and accelerating at 1.5 m/s^2 for 3 seconds, then continues with constant speed. Find the scale reading...

#### Latest answer by

a.) How large a friction force impedes the motion of the box? b.) How large is the normal force?

#### Top voted answer by

The tension in the cable is 3500 N. What is the elevator's acceleration?

#### Answered by

Find the tension in the clothesline in terms of W.

#### Top voted answer by

The halves of the string make 35 degrees with the vertical. What is the tension in the string? What is the tension in the string?

#### Answered by

A ball is thrown up into the air at an initial velocity of 50.0 m/s. What is its velocity after 2.50 seconds?

#### Top voted answer by

She wishes to cross a river that is 2.0 km wide and has a current of 1.5 meters/sec. If the kayaker aims her craft straight across the river, the current will carry her downstream as she paddles across...

#### Answered by

A man jumped horizontally from a window and reached the ground 0.80 s later. If he landed 3.6 m from the base of the building, what was his initial speed? How high was the window above the ground...

#### Answered by

A cannon ball leaves a fort with an initial horizontal speed of 1.8*10^2 m/s and strikes a ship in the sea below 7.2 s later. How high is the fort above sea level?

#### Top voted answer by

An object is falling at a rate that is 60% of the acceleration of gravity therefore it is pressing down on anything below it with: A> 100% of its mass B> 60% of its mass C>...

#### Answered by

A shell was fired from ground level with an initial speed of 350 m/s at an angle of 30 degrees to the horizontal. Assuming there is no air resistance, calculate: a) its time of flight; b)...