A mass on a spring nearly hits the ground 20 times a minute, its frequency is
- 3 cycles per second.
- 1/3 cycle per second.
- 20 cycles per second.
Explanation from PART66Online
Frequency is the number of complete cycles per second. The mass completes 20 cycles in 60 seconds, so f = 20 / 60 = 1/3 cycle per second (Hz). Stating 20 cycles per second confuses the per-minute count with a per-second rate.
A
Arunkumar222 asked · 3 Dec 2014
Kindly explain with formula
Community Comments (1)
P
PART66Online
3 Dec 2014
60 / 20 = 3, so one hit takes 3 seconds.
So in 1 second it will do 1/3 cycle.
So in 1 second it will do 1/3 cycle.
Please Sign In to post a comment.
More discussions in 2. Physics
- A body dropped from 10 m will hit the ground in
- How long will it take a car moving at 60 km/hr to travel 90 km?
- An aircraft of 2 metric tonnes lands with 400 kilojoules of energy, 10 kiloNewtons of force is applied at the brakes, how far does the aircraft take to stop?
- A radar rotates 1 revolution each 30 seconds and uses 10J of energy each revolution. How many joules does it use in a day?
- A light aircraft flies in a semi-circle from point A to point B. If the circle has a radius of 20km and the time taken is 30 minutes, the average speed is
- The landing speed of an aircraft is 54 m/s. If the maximum deceleration is 3m/s2 the minimum length of runway required is