A block of mass m slides down an incline which makes an angle with horizontal. The...

Question

Question

Answer 1

Answer #1

Work done by friction + work by gravity is = eqaul to change in kinetic energy.

And kinetic energy is zero initial and final.

Friction work is - coefficient of friction × mass × gravity × height

Gravity work = mass× gravity× height.

So answers are mgh and -umghcostheta

Hence b is correct more accurate answers

If any doubt please comment if you like my solution hit the like button

Answer 2

Similar Homework Help Questions

Question 6 (1 point) A block of mass m slides down an incline which makes an...

Question 6 (1 point) A block of mass m slides down an incline which makes an angle with horizontal The block is initially at a height h, and co-efficient of friction is Hk. What will be the work done by the friction force when it reaches the bottom? O-umgh cos e O-umgh O-Mmgh cos e O-uimgh Onone of them are correct 0-mgh O-Hemgh tan O-Himgh sino
When released from rest on a rough incline, a block of mass M = 20.0kg slides...

When released from rest on a rough incline, a block of mass M = 20.0kg slides down with an acceleration a = 5.0m/s2. The incline angle 6= 53.10. M e [b] What is the value of the co-efficient of kinetic friction, Uk?
A mass M slides downward along a rough plane surface inclined at angle to the horizontal....

A mass M slides downward along a rough plane surface inclined at angle to the horizontal. Initially the mass has a speed Vi before it slides a distance L down the incline. The coefficient of kinetic friction between the mass and the incline is uk. The power associated with the work done by the frictional force is (Select] The power associated with the work done by the gravitation force is (Select] The power associated with the work done by the...

A block slides down an incline at an angle of 30.0 degrees. At the bottom of...

A block slides down an incline at an angle of 30.0 degrees. At the bottom of the incline the block is traveling at 1.20 m/s. The coefficient of friction between the block and the incline is 0.25. I need help with A., B., and C. PHY 222 Assignment 1 Name 3. A block slides down an incline at an angle of 30.0°. At the bottom of the incline the block is travelling at 1.20 m/s. The coefficient of friction between...
A block slides down a frictionless ramp, which makes a 30 degree angle to the horizontal...

A block slides down a frictionless ramp, which makes a 30 degree angle to the horizontal floor. The block slides the full 180m all the way down the ramp, where it encounters a flat surface with friction. It slides for 250m before it finally comes to rest. a.) what is the speed at the bottom of the ramp? b.) What is the coefficient of friction on the flat surface? c.) What is the total time the block was in in...
a block of mass 10 kg is initially at rest when it slides down a frictionless...

a block of mass 10 kg is initially at rest when it slides down a frictionless incline whose height is 10 m and is pitched at an angle of 30 degrees. At the bottom of the incline the mass encounters a horizontal surface that has a coefficient of kinetic friction of 0.4 with the mass. How far from the bottom of the incline will the mass come to a stop?

A block of mass m starts from rest and slides down from the top of a...

A block of mass m starts from rest and slides down from the top of a wedge of height h and length d. The surface of the wedge forms an angle of ? with respect to the horizontal direction. The force of kinetic friction between the block and the wedge is f. How fast is the block traveling when it reaches the bottom of the wedge?
3. Starting from rest, a 5.20-kg block slides 1.60 m down a rough 30.0° incline. The...

3. Starting from rest, a 5.20-kg block slides 1.60 m down a rough 30.0° incline. The coefficient of kinetic friction between the block and the incline is μk = 0.436. (a) Determine the work done by the force of gravity. J (b) Determine the work done by the friction force between block and incline. J (c) Determine the work done by the normal force. J (d) Qualitatively, how would the answers change if a shorter ramp at a steeper angle...
A block of mass m = 2.26 kg slides down an α = 32.8 ° incline...

A block of mass m = 2.26 kg slides down an α = 32.8 ° incline which is h = 3.54 m high. At the bottom, it strikes a block of mass M = 7.22 kg which is at rest on a horizontal surface, as seen in figure below. (Assume a smooth transition at the bottom of the incline.) If the collision is elastic, and friction can be ignored, determine the speed of the smaller block after the collision.

A 1.2 kg block slides 1.0 m down along an incline making an angle of 35"...

A 1.2 kg block slides 1.0 m down along an incline making an angle of 35" with the horizontal. The initial velocity of the block was 0 m/s and the final velocity was 2.0 m/s. What percentage of the total energy was lost to friction?