Ask question

Ask question

All categories

3 years ago

8

An athlete whirls a 8.00 kg hammer m from the axis of rotation in a horizontal circle, as shown in the figure below . The hammer

makes one revolution in s. What is the centripetal force on the hammer ?

1 answer:

Zigmanuir [339]3 years ago

4 0

Answer:

$mv \div r \\ mass \times velocity \div radius$

You might be interested in

A thin ring of radius 73 cm carries a positive charge of 610 nC uniformly distributed over it. A point charge q is placed at the

kow [346]

Answer:

q = - 93.334 nC

Explanation:

GIVEN DATA:

Radius of ring 73 cm

charge on ring 610 nC

ELECTRIC FIELD p FROM CENTRE IS AT 70 CM

E = 2000 N/C

Electric field due tor ring is guiven as

$E = \frac{KQx}{[x^2+ R^2]^{3/2}}$

$E = \frac{9\time 10^9 \times 610\times 10^[-9} 0.70}{(0.70^2 + 0.73^2)^{3/2}}$

E1 = 3714.672 N/C

electric field due to point charge q

$E =\frac[kq}{x^2}$

$E = \frac{9\times 10^9 \times q}{0.70^2}$

$E2 = 1.837\times 10^{10}\times q$

now the eelctric charge at point P is

E = E1 + E2 $2000 = 3714.672 + 1.837\times 10[10} \times q$

solving for q

q = - 93.334 nC

7 0

3 years ago

Air is warmer and less dense than surrounding air at the equator because the equator receives more?

Hatshy [7]

The answer is C: Solar energy

4 0

3 years ago

Read 2 more answers

In 2020, nasa confirmed the existence of what on the lunar surface?.

kipiarov [429]

Water was confirmed to be on the sunlit surface of the Moon

6 0

2 years ago

1. Which Law? When you are standing up in a subway train, and the train suddenly stops, your body continues to go forward.

riadik2000 [5.3K]

1. Law 1, since there is no other force acting on your body as you stand there, so you will continue to go forward.

2. Law 3, since the swimmer is using opposite forces to propel herself through the water. She generates a force by pushing the water which helps to push her forward.

3. Law 2, since you are giving the motorcycle more energy as a result of the gas being transformed into the energy that helps to accelerate the motorcycle's speed.

6 0

3 years ago

1. Cam Newton can sprint 40 meters in 5.79 seconds! How fast can he run?

Vesnalui [34]

This is a Physics question where we need to figure out how many meters Cam can run per second. To figure this out we divide the distance by the change in time.

40/5.79 = 6.9 meters per second approximately.

3 0

3 years ago

Read 2 more answers