A 12-kg box is released from the top of an incline that is 5.0 m long and makes an angle of 40° to the horizontal. A 60-N friction force impedes the motion of the box. (a) What will be the acceleration of the box and (b) how long will it take to reach the bottom of the incline?

A 12-kg box is released from the top of an incline that is 5.0 m long and makes an angle of 40° to the horizontal. A 60-N friction force impedes the motion of the box. (a) What will be the acceleration of the box and (b) how long will it take to reach the bottom of the incline?

Name: A 12-kg box is released from the top of an incline that is 5.0 m long
Uploaded: 2024-03-20T06:57:57.000Z
Channel: Bartleby
Description: A 12-kg box is released from the top of an incline that is 5.0 m long andmakes an angle of 40° to the horizontal. A 60-N friction force impedes themotion of the box. (a) What will be the acceleration of the box and (b) howlong will it take to reach

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter5: Further Applications Of Newton's Laws: Friction, Drag, And Elasticity

Section: Chapter Questions

Problem 9PE: Show that the acceleration of any object down an incline where friction behaves simply (that is,...

See similar textbooks

Similar questions

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?
Repeat the preceding problem, but including a drag force due to air of fdrag=bv .
A block is given an initial velocity of 5.00 m/s up a frictionless incline of angle = 20.0 (Fig. P5.47). How far up the incline does the block slide before coining to rest?
Show that the acceleration of any object down an incline where friction behaves simply (that is, where fk=kN ) is a=g(sinkcos). Note that the acceleration is independent of mass and reduces to the expression found in the previous problem when friction becomes negligibly small (k=0).
A 75.0-g arrow, fired at a speed of 110 m/s to the left, impacts a tree, which it penetrates to a depth of 12.5 cm before coming to a stop. Assuming the force of friction exerted by the tree is constant, what are the magnitude and direction of the friction force acting on the arrow?
Bill gets a job delivering pizzas. The pizza companymakes him mount a sign on the roof of his car. Thefrontal area of the sign is A = 0.612 ft2, and he estimatesthe drag coefficient to be CD = 0.94 at nearly all air speeds.Estimate how much additional money it costs Bill per year infuel to drive with the sign on his roof compared to withoutthe sign. Use the following additional information: He drivesabout 10,000 miles per year at an average speed of 45 mph.The overall car efficiency is 0.332, rfuel = 50.2 lbm/ft3, andthe heating value of the fuel is 1.53 * 107 ft . lbf/lbm. Thefuel costs $3.50 per gallon. Use standard air properties. Becareful with unit conversions.
A 560-g squirrel with a surface area of 930 cm2 falls from a 5.0-m tree to the ground. Estimate its terminal velocity. (Use a drag coefficient for a horizontal skydiver.) What will be the velocity of a 56-kg person hitting the ground, assuming no drag contribution in such a short distance?
You want to run up a hill starting from standstill. The hill is at an angle of 30 degrees with respect to hortizontal and has a coefficient of static friction of 0.3. How long will it take to reach a top speed of 25.2km/h?
Hi I needed help with this. An athlete with a mass of 53.5 kg is doing pushups as shown in the figure below. The value for rW⊥ is 1.00 m and the value for rR⊥ is 1.60 m. (a) Assuming she moves upward at a constant speed, determine the force she must exert on the floor with each hand to do a push-up.(b) The triceps muscle in the back of her upper arm with an effective lever arm of rT⊥ = 1.70 cm, as shown in the figure below, and she exerts force on the floor a horizontal distance of r 'R⊥ = 2.05 cm from the elbow joint. Determine the force in the triceps muscle.In order to appreciate the strength of the triceps, determine the ratio of the force in the tricep muscle to her weight (in decimal form). FT/W = ?
An 8 kg box is released on a 35° incline and accelerates down the incline at 0.30 m/s2 . Find the frictionalforce impeding its motion and how large is the coefficient of friction in this situation.
A 60kg box rest on a rough horizontal surface. The coefficient of kinetic friction between the boxand the surface is 0.25. If a horizontal force of 160 N acts on the box for 5 seconds, find thevelocity and the distance of the box at the end of that time.
A ball hangs from a 1.25 m string. If it is given a push at the bottom, what is the minimum speed needed at the botttom for the ball to make it over the top without losing tension?