please answer question 3 and 4. l bect is pushed across a surface with a coefficient...
A box of mass 6.0 KG accelerates from rest by a force across the floor at a rate of 2.3 m/s^2 for 5.0s. Find the net work done on the box if the weight is pulled up by a force of 85 N.
The block shown is pulled a distance d = 1.5 m across a frictionless horizontal surface at a constant speed by the force shown. If M = 5.0 kg, F = 30 N and = 40°, find: (a) the work done by the force (b) the normal force exerted by the surface A light string can support a stationary hanging mass of 40 kg before breaking. Determine the maximum speed of a 5 kg object tied to one end of...
A 4.7 kg block is being pushed across a frictionless horizontal surface by a horizontal force. The block accelerates at 3.8 m/s2. What is the magnitude of the normal force the surface exerts on the block? Express your answer in newtons and round to one decimal place.
A 3.9 kg block is being pushed across a frictionless horizontal surface by a horizontal force. The block accelerates at 5.6 m/s2. What is the magnitude of the normal force the surface exerts on the block? Express your answer in newtons and round to one decimal place.
Please help
A. A block is pulled along a horizontal surface by a force of 12.0 N. The block has a mass of 4.00 kg and it accelerates at 2.00 m/s. Find the coefficient of kinetic friction for the interface between the block and the surface. B. A stone falls vertically through the air and experiences a drag force. If the stone's mass is 6.00 kg. and the drag force (upwards force) is 14.0 N, what is the acceleration of...
A mass m = 14 kg is pulled along a horizontal floor, with a
coefficient of kinetic friction μk = 0.12, for a
distance d = 5.9 m. Then the mass is continued to be pulled up a
frictionless incline that makes an angle θ = 38° with the
horizontal. The entire time the massless rope used to pull the
block is pulled parallel to the incline at an angle of θ = 38°
(thus on the incline it is...
2. A crate is pushed horizontally at an angle of 20° across a rough surface as shown. The mass of the crate is 55 kg and the coefficient of kinetic friction M = 0.35. a) What applied force is required to keep the box moving at a constant acceleration of 3m/s2 ? b) What applied force is needed to keep the box moving at a constant speed, that is, no acceleration? (2 pts.) 3. A 60-kg skier starts from rest...
A 2.0 kg block starts from rest. It is pushed across a rough
horizontal surface by a force F (magnitude of F = 8.0 N) directed
at a 40° angle as shown. The block is found to accelerate along the
surface at 2.0 m/s2.
Prove that there is a frictional force acting on the block
F-8.0 N 40° 40 2.0 kg
A box with mass M is pulled across a frictionless surface with a constant force F as shown below. 13) What is horizontal acceleration of the box? Mg OF F/M OM F/g 14) What is the normal force on the box? Mg OF F/M ом F/g 15) After the block is accelerated for 5 s, the force stops pulling on the box. What happens? The block comes to rest. The block continues in the same direction with a constant speed....
Question 25 1 pts A 3kg object traveling at 4 m/s is pushed by a net force of 5 N. The speed increases to 6 m/s. Find the distance the object travels. O 0.4m O 1.2 m 4.8m 06m O None of the above Question 26 1 pts A 40.0 N crate is pulled up a 5.0 m inclined plane. The angle of inclination of the plane to horizontal is 37º. If there is a constant force of friction of...