Using Hooke's Law and velocity to calculate compression.
A 2100.00 kg car moving at 27.50 m/s hits an initially uncompressed horizontal spring with spring constant of 1.60à?10^6 N/m. What is the maximum compression of the spring? (Neglect the mass of the spring)
A rubber ball of mass 0.05kg is dropped from a height of 10 cm above a table top. it bounces off the table and rises to the same height.
a. What is the shape of the graph of the force exerted on the ball by the table as a function of time?
b. If the rubber ball was in contact with the table for 30ms, what is the avg force
____ 1. A simple pendulum, 2.0 m in length, is released with a push when the support string is at an angle
of 25 deegree from the vertical. If the initial speed of the suspended mass is 1.2 m/s when at the release
point, what is its speed at the bottom of the swing? (g = 9.8 m/s2)
a. 2.3 m/s
b. 2.6 m/s
c. 2.0 m/s
d. 1.8 m/
A 230 g block is dropped onto a relaxed vertical spring that has a spring constant of k = 2.5 N/cm (Fig. 7-30). The block becomes attached to the spring and compresses the spring 14 cm before momentarily stopping.
What work is done on the block by the spring force while the spring is being compressed? (in J)
What is the s
An essentially massless spring is connected to the ceiling. A 5.00 g mass is attached to the spring so that the spring is 2.00 cm longer than its unstretched length. The mass is the pulled downward so that it is 20 cm below the equilibriun position and released from rest. After 10s the amplitude of oscillation has been reduce to
On a frictionless table, one end of a spring is fixed. A cord attached to the free end pulls it along a meter scale beginning from 0. A record is made of the position of the free end, x, and the resisting force, F, exerted by the spring on the cord.
SEE ATTACHMENT #1 for the parameters and a record of F vs x, showing position
#1. A weight lifter lifts a 250-N set of weights from a ground level to a position over his head, a vertical distance of 2.00 m. How much work does the weight lifter do, assuming he moves the weights at a constant speed?
#2. A 7.80 g bullet moving at 575 m/s penetrates a tree trunk to a depth of 5.50 cm. (a) Use work and ener
1. A 300-g mass at the end of a spring oscillates with an amplitude of 7.0 cm and a frequency of 1.80 Hz. (a) Find its maximum speed and maximum acceleration. (b) What is its speed when it is 3.0 cm from its equilibrium position?
A) 8.96 m/s, 8.9 m/s2 (b) 0.45 m/s
B) 79.2 m/s, 895 m/s2 (b) 0.512 m/s
C) 0.79 m/s, 8
A diesel engine has air before compression at 280 K and 85 Kpa. The highest temperature is 2219 K and the highest pressure is 6 MPa. Find the volumetric compression ratio and the mean effective pressure using cold air properties at 300K.