A crate on a ramp will slip if the inclination is 55 degrees.
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?
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?
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...
How much work does F do in moving the cart 3.0 m?
From the 2 m mark to the 52 m mark?
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)...
How much work to lift it?
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...
a.) How large a friction force impedes the motion of the box? b.) How large is the normal force?
The tension in the cable is 3500 N. What is the elevator's acceleration?
Find the tension in the clothesline in terms of W.
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?
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?
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...
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...
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?
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>...
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)...
A bullet was fired horizontally from the top of a 150 m tall tower at 280 m/s. Find the bullet's range and time of flight. Determine also its speed on impact with the ground below.
A projectile is fired with a horizontal speed of 25 m/s from the top of a mountain of height 110 m. What was the range and time of flight of the projectile?
A cannon ball leaves a fort with an initial horizontal speed of 180 m/s and strikes a ship in the sea below 7.2 s later. What is the ball's range? How high is the fort above sea level?