Question

In: Physics

A box is sliding up a 40 degree incline. At a point 55cm from the bottom...

A box is sliding up a 40 degree incline. At a point 55cm from the bottom of the incline (measured along the incline) the phone has a speed of 1.4ms^-1. The coefficient of kinetic friction between the box and incline is 0.15.

a) Write expressions for Newton's second law in directions parallel and perpendicular to the surface of the incline. Thus show that the box will move a further 13cm up the incline.

b) After having stopped, the phone slides back down the incline. How far would box travel down in 0.1second (What the free body diagram look like to investigate this time period?).

Solutions

Expert Solution


Related Solutions

A cookie jar is moving up a 40° incline. At a point 55 cm from the...
A cookie jar is moving up a 40° incline. At a point 55 cm from the bottom of the incline (measured along the incline), the jar has a speed of 1.8 m/s. The coefficient of kinetic friction between jar and incline is 0.15. (a) How much farther up the incline will the jar move? ___ m (b) How fast will it be going when it has slid back to the bottom of the incline? ___m/s
1. A box rests on a 30 degree incline at a height of 3 meters. Determine...
1. A box rests on a 30 degree incline at a height of 3 meters. Determine the work done by friction as the object slides down the incline, given that the coefficient of friction between the box on the incline is 0.45. For the box in the previous problem, what will the speed of the box be at the bottom?A roller coaster has an initial hill of height "h". If the coaster slides down and then rolls through a loop...
A cookie jar is moving up a 38 ° incline. At a point 51 cm from...
A cookie jar is moving up a 38 ° incline. At a point 51 cm from the bottom of the incline (measured along the incline), the jar has a speed of 1.5 m/s. The coefficient of kinetic friction between jar and incline is 0.12. (a) How much farther up the incline will the jar move? (b) How fast will it be going when it has slid back to the bottom of the incline? (c) Do the answers to (a) and...
A cookie jar is moving up a 25° incline. At a point 55 cm from the...
A cookie jar is moving up a 25° incline. At a point 55 cm from the bottom of the incline (measured along the incline), the jar has a speed of 1.4 m/s. The coefficient of kinetic friction between jar and incline is 0.12. (a) How much farther up the incline will the jar move? m (b) How fast will it be going when it has slid back to the bottom of the incline? m/s (c) Do the answers to (a)...
10 kg crate is pulled 4.9 m up a 34 degree incline by a rope angled...
10 kg crate is pulled 4.9 m up a 34 degree incline by a rope angled 16 degree above the incline. The tension in the rope is 125 N, and the crate's coefficient of kinetic friction on the incline is 0.26. How much work is done by: a. Tension? J b. Gravity? J c. Normal Force? J d. What is the increase in thermal energy of the crate and incline? J
A box is sliding on a rough surface at a constant speed. Which statement is TRUE?...
A box is sliding on a rough surface at a constant speed. Which statement is TRUE? 1. Work done by gravity is negative 2. Friction deos not do any work 3. Work done by friction is negative 4 Work done by friction can be either positive or negative depending on direction of motion?
A block of mass 23 kg is set on top of a 37 degree incline with...
A block of mass 23 kg is set on top of a 37 degree incline with a hight of 13.5 m. The incline rests on a table that is 27.8 m above the ground on the planet Mercury (M = 3.285 * 10^23 kg, R = 1516 mi). The coefficient of kinetic friction between the block and the incline is 0.18. The gravitational acceleration on Mercury is 3.68 m/s. How far from the base of the table does the block...
A block of mass m1 = 2kg is placed on a 30 degree incline. The block...
A block of mass m1 = 2kg is placed on a 30 degree incline. The block is attached to a string that passes over a pulley at the top of the incline. vertically from a string that passes over a pulley. A mass m2 = 0.2kg is hanging from the other end of the string. If the coefficients of static and kinetic friction are us = 0.4 and uk = 0.3, Will the system accelerate if it’s initially at rest?...
Starting from rest, a 5 kg block slides 2.5 m down a roughly 30 degree incline....
Starting from rest, a 5 kg block slides 2.5 m down a roughly 30 degree incline. the coefficient of kinetic friction between the block and the incline is uk= .436. Determine a) the work done by the force of gravity, b) the work done by the friction force between the rock and the incline and c) the work done by the normal force. d) qualitatively how would answers change if a shorter ramp at a steeper angle were used to...
A box of mass sits on the floor of an elevator. The area of the bottom...
A box of mass sits on the floor of an elevator. The area of the bottom surface of the box is 0.250 m2. When the elevator is moving upward at a constant speed of 2.00 m/s the pressure the box exerts on the floor is 981 pascal. (Note: One Pascal equals one Newton per square meter; 1 Pa = 1 N/m2). Calculate the pressure the box exerts on the floor while the elevator a. slows uniformly from an upward speed...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT