Cönsider a 100 kg box which is at the rest. Now, two forces are applied to the box and it starts to move. Consider F1 = 200 N and F2 = 500 N. Also, 0 = 60 and p = 30. Find (a) the normal reaction force from ground (N). (b) the velocity (m/s) if it slides 5 m. Take coefficient of kinetic friction to be 0.2. Assume g = 9.81 m/s?. F2 F1 (a) the normal reaction force from ground (N) Choose... b) the velocity (m/s) if it slides 5 m Choose..

Cönsider a 100 kg box which is at the rest. Now, two forces are applied to the box and it starts to move. Consider F1 = 200 N and F2 = 500 N. Also, 0 = 60 and p = 30. Find (a) the normal reaction force from ground (N). (b) the velocity (m/s) if it slides 5 m. Take coefficient of kinetic friction to be 0.2. Assume g = 9.81 m/s?. F2 F1 (a) the normal reaction force from ground (N) Choose... b) the velocity (m/s) if it slides 5 m Choose..

Classical Dynamics of Particles and Systems

5th Edition

ISBN:9780534408961

Author:Stephen T. Thornton, Jerry B. Marion

Publisher:Stephen T. Thornton, Jerry B. Marion

Chapter2: Newtonian Mechanics-single Particle

Section: Chapter Questions

Problem 2.51P: Let us make the (unrealistic) assumption that a boat of mass m gliding with initial velocity v0 in...

See similar textbooks

Similar questions

A 2.0 kg projectile with initial velocity v→ = 6.5i m/s experiences the variable force F→ = -2.0ti +4.0t2j N, where t is in s. What is the projectile's speed at t = 2.0 s? Also, at what instant of time is the projectile moving parallel to the y-axis?
A 3.5 kg particle moves along an x axis according to x(t) = −12 + 5t2 − 4t3, with xin meters and t in seconds. In unit-vector notation, what is the net force acting on theparticle at t = 6 s?
If a 0.50 kg block initially at rest on a frictionless, horizontal surface is acted upon by a force of 4.2 N for a distance of 4.3 m, then what would be the block's velocity (in m/s)?
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 b is a constant and v is 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.
In the very Dutch sport of Fierljeppen, athletes run up to a long pole and then use it to vault across a canal. At the very top of his arc, a 55 kg vaulter is moving at 2.5 m/s and is 5.1 m from the bottom end of the pole. What vertical force does the pole exert on the vaulter?
A particle of mass 1.05 kg is subject to a force that is always pointed towards the East but whose magnitude changes linearly with time t. The magnitude of the force is given as F = 4t, and has units of newtons. Let the x-axis point towards the East. Determine the change in x-coordinate in meters of the particle Δx between t = 0 and t = 2.4 if the initial velocity is 17.5 m/s, and pointed in the same direction as the force.
A 2.0 kg projectile with initial velocity v→ = 6.5 ı^ m/s experiences the variable force F→ =-2.0t ı^ + 4.0t^2 ȷ^ N, where t is in s. What is the projectile's speed at t = 2.0 s? At what instant of time is the projectile moving parallel to the y-axis?
A hockey player slaps a puck into a cushion, which brings the puck to rest. If the puck's initial velocity was +40 m/s and it has a mass of 170 g, what force does the cushion apply to the puck? Assume the cushion acts on the puck for 0.03 s and the surface that the puck slides on is frictionless.
If it takes a human cannonball 1.8 s to exit a 1.9 m long cannon and the average net force acting on the performer is 159 N, what is the performer’s mass?
A particle of mass 2.4 kg is subject to a force that is always pointed towards the North but whose magnitude changes quadratically with time. Let the y-axis point towards the North. The magnitude of the force is given as F = 6t2, and has units of newtons Determine the change in velocity Δv, in meters per second, of the particle between t=0 and t=1.3s. Determine the change in y coordinate, in meters, of the particle Δ y betweent=o and t=1.3 if the initial velocity= 15.9 m/s and directed North, in the same direction as the force.
There are two forces on the 1.19 kg box in the overhead view of the figure but only one is shown. For F1 = 15.7 N, a = 14.7 m/s2, and θ = 34.1°, find the second force (a) in unit-vector notation and as (b) a magnitude and (c) a direction. (State the direction as a negative angle measured from the +x direction.)
If there are no non-conservative forces to worry about, what is the magnitude of the applied force needed to keep an object moving at a constant velocity? Assume the mass of the object is m and its velocity is v.