Khufra works at a spring factory and he was assigned to test a certain spring, whose constant is 50 N/m, attached to a 50-kg block in an incline (8=30°). With the spring initially at equilibrium position, the block was pushed 0.3 meters up the incline by a 50-N external force applied parallel to the path. If the coefficient of kinetic friction is 0.3, determine the: a) normal force (in Newtons) b) work done by the spring (in Joules)

A mass is sliding on a frictionless surface with a speed v. It runs into a linear X spring with a spring constant of k, which compresses from position x, to position xp. X; m m ©theexpertta.com Part (a) Write a general expression for the force that the spring exerts on the mass, in term of k and x. Choose the initial position of the front of the spring to be x;=0. = - kx v Correct! Fspring Part (b) Select the equation that correctly describes the work done by the spring to stop the mass. W = - w = - kx dx v Correct! Part (c) Evaluate the relationship in part (b) to arrive at an expression for the work done in terms of known variables. W = - ( 1/2 ) k x2| 8 9 HOME d 5 6. a h j 1 2 3 P END - Xf Xị VOI BACKSPACE CLEAR DEL I give up! Submit Hint Feedback Hints: 1 for a 0% deduction. Hints remaining: 0 Feedback: 0% deduction per feedback. |-What is the integral of x dx? Part (d) Solve for the numerical value of the work done in Joules given that x; = 0, xp= 68 cm, and k = 145 N/m. W = -…

The figure below shows an initially stationary block of mass m on a floor. A force of magnitude F = 0.510mg is then applied at upward angle 0 = 19°. (a) What is the magnitude of the acceleration of the block across the floor if the friction coefficients are us = 0.590 and uk = 0.505? m/s? (b) What is the magnitude of the acceleration of the block across the floor if the friction coefficients are ug = 0.395 and uk = 0.295? m/s2

A block of mass 5.40 kg is pushed up against a wall by a force P that makes an angle of = 50.0° angle with the horizontal as shown below. The coefficient of static friction between the block and the wall is 0.300. (a) Determine the possible values for the magnitude of P that allow the block to remain stationary. (If there is no maximum, enter NONE in that answer blank.) P. maxl= IP A N X Your response differs from the correct answer by more than 10%. Double check your calculations. N P Pminh, = 92.32 (b) What happens if IP has a larger value than IP The block slides up the wall. The block does not slide along the wall. The block slides down the wall. |Pmaxl = P min! = What happens if IP has a smaller value than IP min!? The block slides up the wall. O The block does not slide along the wall. The block slides down the wall. (c) Repeat parts (a) and (b) assuming the force makes an angle of = 12.0° with the horizontal. Determine the possible values for the magnitude of P that allow the…