Two clocks are taken from the Earth to the Moon. The first clock uses a pendulum mechanism, while the second uses a spring-loaded mechanism. What happens with the time displayed by the pendulum clock? chiu (jc87778) – Springs and Pendulums – schmidt – (SCI402 AC) 2 1. faster 2. slower 3. no change 010 (part 2 of 2) 10.0 points What happens with the time displayed by the spring-loaded clock?

1. slower

2. faster

3. no change

Part 1. Pendulum clock is slower.

Part 2. Spring-loaded clock remains the same.

Explanation:

The period of a simple pendulum is given by

where = length of pendulum and = acceleration due to gravity.

It is seen that the period is inversely proportional to the square root of the gravitational acceleration. So if gravity increases, period decreases and vice versa.

on the moon is about one-fifth that of the Earth. Hence, the pendulum will have a larger period, about twice (). A larger period means it takes longer to finish an oscillation, so the pendulum clock is slower.

The period of a loaded spring is given by

where = the spring constant and = mass of load on the spring.

It is seen that this relation does not depend on gravity nor does it have any parameter that depends on gravity: k is a constant of the spring that does not change while mass is independent of location.

Hence, the spring-loaded clock will remain the same.

As a note, one might assume that gravity affects the loaded spring because the load is 'pushed' down by gravity. In fact, only the equilibrium position is affected by gravity; it only determines where the oscillation starts from, not how long it takes.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

see earlier