Check Your Understanding A force of 1150 N acts parallel to a ramp to push a 250-kg gun safe into a moving van. The ramp is frictionless and inclined at 17°. (a) What is the acceleration of the safe up the ramp?
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- A box of mass 100.0kg rests on level ground and there is no friction between the box and theground. Resting on top of that mass is a 40.0kg mass with friction coecient that's unknown. A ropeis tied to the 100.0 kg mass and draped over a pulley from which a third mass hangs. How much massmust the hanging mass have in order for the acceleration of all masses to be 5ms2 ? What is the minimum possible friction coecient of the 40.0kg mass in the prior problem?What is the acceleration of a 11 kg block down a frictionless incline, inclined at theta - 68 degrees.Hi please help: To move a large crate across a rough floor, you push on it with a force F at an angle of 21 ∘ below the horizontal. Find the acceleration of the crate if the applied force is 350 N, the mass of the crate is 32 kg and the coefficient of kinetic friction is 0.48.
- a block of mass m is initially traveling upward along a ramp at speed v. The coefficient of kinetic friction between the block and the ramp is Mk. (a) Using Newton's second law, solve for the normal force on the block due to the ramp. (b) Using Newton's second law solve for the acceleration of the block.Find the x-component of the weight to calculate for the tension force.Using a rope, a 20N object was kept in place and placed on top of an inclined plane with an angle of 29 degrees.A force of 100 N is applied to an object at an angle of 30° with the horizontalto pull it along a horizontal path and results in an acceleration of 10 m/s2. Find the mass of the object.
- What force is needed to accelerate a sled (total mass = 65 kgkg ) at 1.2 m/s on horizontal frictionless ice?A 75.0-kg man stands on a bathroom scale in an elevator that accelerates from rest to 30.0 m/s in 2.00 s. (a) Calculate the scale reading in newtons and compare it with her weight. (The scale exerts an upward force on her equal to its reading.)A crate with a mass of 79.8 kg is being pushed up a 30o frictionless, ramp with an unknown force, F. If the acceleration of the ramp is 2 m/s2, calculate the magnitude of the force.
- An object with a mass of 15 kg rests on a frictionless horizontal plane and is acted upon by ahorizontal force of 30 N.(a) What is its acceleration?(b) How far will it move in 10 s?(c) What will be its velocity after 10 s?A 3.0-kg mass and a 5.0-kg mass hang vertically at the opposite ends of a very light rope that goes over an ideal pulley. If the masses are gently released, what is the resulting acceleration of the masses?A rope has a breaking tension of 250N. Find the minimum acceleration a boy weighing 300N can slide down the rope without the rope breaking.