A fish on a string has a mass of 3.0 kg. A quick pull on the string caused it to accelerate upward at 4.0 m/s2. What is the magnitude of the force (tension) exerted by the cable? (Don't forget the weight!)

17 N

29 N

-12 N

zero

41 N

Acentrifuge in a medical laboratory rotates at an angular speed of 3,700 rev/min. when switched off, it rotates through 54.0 revolutions before coming to rest. find the constant angular acceleration (in rad/s2) of the centrifuge. your response is within 10% of the correct value. this may be due to roundoff error, or you could have a mistake in your calculation. carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad/s2