A block sets on a rough (ju), horizontal surtace. When the forces F,= 30 N and F2= 10 N are applied on the block as shown below, it is found that the block moves with constant velocity. The force of kinetic friction (f.) between the block and the surface is: A. 4.14 N, towards left B. 4.14 N, towards right C. 11.2 N, towards left D. 11.2 N, towards right E. 15 N, towards left F1 F2+

A block sets on a rough (ju), horizontal surtace. When the forces F,= 30 N and F2= 10 N are applied on the block as shown below, it is found that the block moves with constant velocity. The force of kinetic friction (f.) between the block and the surface is: A. 4.14 N, towards left B. 4.14 N, towards right C. 11.2 N, towards left D. 11.2 N, towards right E. 15 N, towards left F1 F2+

Name: A block sets on a rough (), horizontal surface.When the forces F,= 30
Uploaded: 2024-03-20T06:57:57.000Z
Channel: Bartleby
Description: A block sets on a rough (), horizontal surface.When the forces F,= 30 N and F2= 10 N are applied onthe block as shown below, it is found that the blockmoves with constant velocity. The force of kineticfriction (f) between the block and the surface i

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter5: Displacement And Force In Two Dimensions

Section: Chapter Questions

Problem 71A

See similar textbooks

Similar questions

While sliding a couch across a floor, Andrea and Jennifer exert forces FA and FJ on the couch. Andrea’s force is due north with a magnitude of 130.0 N and Jennifer’s force is 32 east of north with a magnitude of 180.0 N. (a) Find the net force in component form. (b) Find the magnitude and direction of the net force. (c) If Andrea and Jennifer’s housemates, David and Stephanie, disagree with the move and want to prevent its relocation, with what combined forceFDS should they push so that the couch does not move?
A baseball catcher is performing a stunt for a television commercial. He will catch a baseball (mass 145 g) dropped from a height of 60.0 m above his glove. His glove stops the ball in 0.0100 s. What is the force exerted by his glove on the ball?
A skydiver is at an altitude of 1520 m. After 10.0 seconds of free fall, he opens his parachute and finds that the air resistance, FD , is given by the formula FD=bv , where bis a constant and vis the velocity. If b=0.750 , and the mass of the skydiver is 82.0 kg, first set up differential equations for the velocity and the position, and then find: (a) the speed of the skydiver when the parachute opens, (b) the distance fallen before the parachute opens, (c) the terminal velocity after the parachute opens (find the limiting velocity), and (d) the time the skydiver is in the air after the parachute opens.
A toy rocket engine is securely fastened to a large puck that can glide with negligible friction over a horizontal surface, taken as the xy plane. The 4.00-kg puck has a velocity of 3.00im/s at one instant. Eight seconds later, its velocity is (8i+10j)m/s. Assuming the rocket engine exerts a constant horizontal force, find (a) the components of the force and (b) its magnitude.
(a) Give an example of different net external forces acting on the same system to produce different accelerations. (b) Give an example of the same net external force acting on systems of different masses, producing different accelerations. (c) What law accurately describes both effects? State it in words and as an equation.
In the figure, the net external force on the 24 kg mower is known to be 51 N. f=28N v=1.8 m/s a. If the force of friction opposing the motion of 28N what force in newtons is the person acting on the mower? b. Suppose the mower is moving at 1.8 m/s when the force F is removed. How far will the mower go before stopping in m?
A 5kg block is pulled westward across a frictionless horizontal surface by a 30 N force applied at 87° angle above the horizontal? What is the block's acceleration? What is the normal force?
A 8000 kg engine pulls a train of 5 wagons, each of 2000 kg, along a horizontal track. If the engine exerts a force of 40000 N and the track offers a friction force of 5000 N, then calculate: (a) the net accelerating force (b) the acceleration of the train
Two blocksmịand m2 connected by a rope are being pulled by a horizontalforce F equal 160 N. Suppose that mį=10 kg,20 kg, and the coefficient of kineticm 2 =20 kg10 kgfriction between each block and the surfacem1is 0.52.A. Draw free-body diagrams of both objects.B. Find the acceleration of the systemC. Find the tension in the ropeD. What is the distance that the system ( two masses) will travel if youknow that are started from rest and final velocity is 4.5 m/sec(B) a= { F
A person doing a chin-up weighs 670 N, exclusive of the arms. During the first 29.0 cm of the lift, each arm exerts an upward force of 365 N on the torso. If the upward movement starts from rest, what is the person's velocity at this point? (Enter the magnitude only.)
Playing near a road construction site, a child falls over a barrier and down onto a dirt slope that is angled downward at 35 to the horizontal. As the child slides down the slope, he has an acceleration that has a magnitude of 0.50 m/s2 and that is directed up the slope.What is the coefficient of kinetic friction between the child and the slope?
World-class sprinters can accelerate out of the starting blocks with an acceleration that is nearly horizontal and has magnitude 15 m/s2. Which body exerts the force that propels the sprinter: the blocks or the sprinter herself?