Khufra works at a spring factory and he was assigned to test a certain spring, whose constant is 49 N/m, attached to a 13-kg block in an incline (θ = 42°). With the spring initially at equilibrium position, the block was pushed 0.4 meters up the incline by a 32-N external force applied parallel to the path. If the coefficient of kinetic friction is 0.2, determine the normal force (in Newtons). Use g = 9.81 m/s2.

Khufra works at a spring factory and he was assigned to test a certain spring, whose constant is 49 N/m, attached to a 13-kg block in an incline (θ = 42°). With the spring initially at equilibrium position, the block was pushed 0.4 meters up the incline by a 32-N external force applied parallel to the path. If the coefficient of kinetic friction is 0.2, determine the normal force (in Newtons). Use g = 9.81 m/s2.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter7: Conservation Of Energy

Section: Chapter Questions

Problem 15P: A block of mass m = 2.00 kg is attached to a spring of force constant k = 500 N/m as shown in Figure...

See similar textbooks

Similar questions

A block of mass m = 2.00 kg is attached to a spring of force constant k = 500 N/m as shown in Figure P7.15. The block is pulled to a position xi = 5.00 cm to the right of equilibrium and released from rest. Find the speed the block has as it passes through equilibrium if (a) the horizontal surface is frictionless and (b) the coefficient of friction between block and surface is k = 0.350. Figure P7.15
A vibration sensor, used in testing a washing machine, consists of a cube of aluminum 1.50 cm on edge mounted on one end of a strip of spring steel (like a hacksaw blade) that lies in a vertical plane. The strips mass is small compared with that of the cube, but the strips length is large compared with the size of the cube. The other end of the strip is clamped to the frame of the washing machine that is not operating. A horizontal force of 1.43 N applied to the cube is required to hold it 2.75 cm away from its equilibrium position. If it is released, what is its frequency of vibration?
A light spring with spring constant 1 200 N/m is hung from an elevated support. From its lower end hangs a second light spring, which has spring constant 1 800 N/m. An object of mass 1.50 kg is hung at rest from the lower end of the second spring. (a) Find the total extension distance of the pair of springs. (b) Find the effective spring constant of the pair of springs as a system. We describe these springs as in series.
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 (θ=30°). With the spring initially at equilibrium position, the block was pulled 0.3 meters down 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) 424.35, 2.25 -2.25, 424.35, 424.35, -2.25 2.25, 424.35
A spring with a spring constant of k = 192 N/m is initially compressed by a block a distance d = 0.23 m. The block is on a horizontal surface with coefficient of kinetic friction μk, static friction μs, and has a mass of m = 7 kg. How large would the coefficient of static friction μs need to be to keep the block from moving? Recall that to keep the block from moving, the acceleration is zero. Assuming the block has just begun to move and the coefficient of kinetic friction is μk = 0.2, what is the block's acceleration in meters per square second?
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 0.5 meters up the incline by a 30-N external force applied parallel to the path. The coefficient of kinetic friction is 0.30. a) draw clearly the FBD of the block. b) How much is the normal force (in Newtons) on the block? c) How much work is done by the spring (in Joules) on the block?
The force required to compress a non-standard spring as a function of displacement from equilibrium x is given by the equation F(x) = ax2 - bx, where a = 55 N/m2, b = 8 N/m, and the positive x direction is in the compression direction of the spring.
A block of mass m = 2.00 kg is attached to a spring of force constant k = 5.70 ✕ 102 N/m that lies on a horizontal frictionless surface as shown in the figure below. The block is pulled to a position xi = 5.55 cm to the right of equilibrium and released from rest. The left end of a horizontal spring of force constant k is attached to a vertical wall. The right end is attached to a block of mass m, which rests on a horizontal floor. The equilibrium position of the spring is labeled x = 0. The block has been moved to the right to a position labeled x = xi, so that the spring is stretched. (a) Find the the work required to stretch the spring. J(b) Find the speed the block has as it passes through equilibrium.
A 1.40-kg block is pushed against a vertical wall by means of a spring (k = 810 N/m). The coefficient of static friction between the block and the wall is 0.32. What is the minimum compression in the spring to prevent the block from slipping down?
Consider an object of mass 0.150kg that is attached to a horizontal spring of spring constant 35.2 N/m is kept on the frictionless level air track and stretched to the length of 6.50 cm.An outward initial velocity of 2.20 m/s is given to the object,so that determine the displacement of the spring between 6.50 cm and the extreme position
A block of mass m = 2.00 kg is attached to a spring of force constant k = 5.70 ✕ 102 N/m that lies on a horizontal frictionless surface as shown in the figure below. The block is pulled to a position xi = 5.85 cm to the right of equilibrium and released from rest. The left end of a horizontal spring of force constant k is attached to a vertical wall. The right end is attached to a block of mass m, which rests on a horizontal floor. The equilibrium position of the spring is labeled x = 0. The block has been moved to the right to a position labeled x = xi, so that the spring is stretched. (a) Find the the work required to stretch the spring.J (b) Find the speed the block has as it passes through equilibrium.m/s
A 34 kg child uses a pogo stick to bounce up and down. The spring constant, k, of the toy equals 9,100 N/m. (a) By how much would the spring be compressed by the child if she simply balanced herself vertically on the pedals of the stick? (Give your answer in cm.) cm (b) How much energy (in J) is stored in the spring under this circumstance?