. . The force shown in Figure 7-17 acts on a 1-7-kg object whose initial speed...
The force shown in the figure(Figure 1) acts on a 1.3-kg object
whose initial speed is 0.35 m/s and initial position is
x=0.27m.
a. Find the speed of the object when it is at the location
x=0.99 m.
b. At what location would the object's speed be 0.25 m/s?
0.8 0.6 0.4 0.2 0.75 1.00 0.50 Position, x (m) 0.25
6) At one instant, force F 4.0j N acts on a 0.25 kg object that has position vector (2.0-2.0k) m and velocity vector (-50i+5.0k) m/s. About the origin and in unit vector notation, what are (a) the object's angular momentum and (b) the torque acting on the object?
A 2.0 kg object moving to the right with speed 0.50 m/s experiences the force shown. What are the object's speed and direction after the force ends? A. 0.50 m/s left B. At rest C. 0.50 m/s right D. 1.0 m/s right E. 2.0 m/s right
A single, nonconstant force acts in the +?+x direction on an 5.06 kg5.06 kg object that is constrained to move along the ?x‑axis. As a result, the object's position as a function of time is ?(?)=?+??2+??4?=7.38 m?=4.57 m/s2?=0.478 m/s4x(t)=A+Bt2+Ct4A=7.38 mB=4.57 m/s2C=0.478 m/s4 How much work is done by this force from ?=0 st=0 s to ?=2.34 s?
The force on a 3-kg object as a function of position is shown in the figure. If an object is moving at 2.50 m/s when it is located at x = 2.00 m, what will its speed be when it reaches x = 8.00 m2 F (N) 5- 4 3 2 1 R B 7 B x(m) -1 -24 -3 -4
04 Torce - (2.001 + 9.00J + J.JUK) N acts on a 2.90 kg object that moves in time interval 2.10 s from an initial posi- tion 7= (2.70i - 2.90j + 5.50k) m to a final position 72 = (-4.10i + 3.30j + 5.40k) m. Find (a) the work done on the object by the force in that time interval, (b) the average power due to the e Pare = 2 force during that time interval, and (c) the...
1. The force = 9 i + 12 j + 5 k acts on a small object. If the displacement of the object is = 16 i + 10 j . Find the work done by the force using the scalar product . 2. A 25 kg chandelier is hanging from a cable in an elevator (have you ever seen a chandelier in an elevator?). What is the tension in the cable if the elevator that moves downward...
Exercises 1. Suppose a force acts on a 4.00 kg object in the x-direction. The force varies with time and is given by F(t)12.0t3 - 8.00 N. At t -0, the object has a velocity of 3.00 m/s in the positive x-direction. Use the impulse-momentum theorem to find the object's velocity after 2.00 s. 2. In a lab experiment, a spring gun projects a metal sphere. The sphere leaves the spring gun with a velocity of 3.00 m/s in the...
1. (a) The 7-kg block is moving with an initial speed of 8 m/s. If the coefficient of kinetic friction between the block and plane is 0.3, determine the compression in the spring when the block momentarily stops JkA - BONm 8 m/s (b) The 50 lb block rests on the rough surface for which the coefficient of friction is pl = 0.25. A force F= (30+2s) Ib, where s is in ft, acts on the block in the direction...