Question 1

A 5.0 × 10S1U1P12S1S1P0-N object is hung from the end of a wire of cross-sectional area 0.010 cmS1U1P12S1S1P0. The wire stretches from its original length of 200.00 cm to 200.50 cm.
-What is the elongation strain on the wire?

Accepted Answer

A) 1.0 × 102 
B) 1.0 × 10-2 
C) 5.0 × 102 
D) 2.5 × 10-3 
E) 4.0 × 102

Question 2

An iron ball hangs from a 21.5-m steel cable and is used in the demolition of a building at a location where the acceleration due to gravity is 9.78 m/s2. The ball is swung outward from its equilibrium position for a distance of 4.20 m. Assuming the system behaves as a simple pendulum, find the maximum speed of the ball during its swing.

Accepted Answer

A) 4.45 m/s 
B) 2.83 m/s 
C) 17.8 m/s 
D) 1.71 m/s 
E) 9.78 m/s

Question 3

A 0.800-kg block is placed on top of a vertically oriented spring as shown. The block is not attached to the spring, but the spring is attached to the floor. The block oscillates in simple harmonic motion. If the spring constant is 95.0 N/m, determine the amplitude at which the block loses contact with the spring.

Accepted Answer

A) 0.0505 m 
B) 0.0615 m 
C) 0.0735 m 
D) 0.0825 m 
E) 0.0945 m

Exam 10: Simple Harmonic Motion and Elasticity

A 5.0 × 10²-N object is hung from the end of a wire of cross-sectional area 0.010 cm². The wire stretches from its original length of 200.00 cm to 200.50 cm. -What is the elongation strain on the wire?

Exam 10: Simple Harmonic Motion and Elasticity

A 5.0 × 102-N object is hung from the end of a wire of cross-sectional area 0.010 cm2. The wire stretches from its original length of 200.00 cm to 200.50 cm. -What is the elongation strain on the wire?

A 5.0 × 10²-N object is hung from the end of a wire of cross-sectional area 0.010 cm². The wire stretches from its original length of 200.00 cm to 200.50 cm. -What is the elongation strain on the wire?