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2 years ago

Which gives the work done by a torque during angular displacement?

Physics

1 answer:

Nutka1998 [239]2 years ago

4 0

Only when the torque is constant the work done is done during angular displacement. So the correct option is d.

Work done by the force is calculated as the dot product of force and angular displacement of the point of application of force. It is equal to the change in rotational kinetic energy of the body.

Work done by a torque can be calculated by taking an analogy from work done by force.

Work done = torque × angular displacement

So work is done by a torque during angular displacement only when torque is constant.

If a torque applied on a body rotates it through an angle ω, the work done by torque is

W = ζ × ω

To know more about the work done by torque refer to the link given below:

brainly.com/question/17083207

#SPJ4

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A particle's velocity is described by the function vx = kt 2 m/s, where k is a constant and t is in s. The particle's position a

vodomira [7]

Answer:

The value of the constant k is 2

Explanation:

We have the equation of the velocity $v_{x}$ = kt² , where k

is constant and t is the time in second

The particle's position at $t_{0}$ = 0 is $x_{0}$ = -9 m

The particle's position at $t_{1}$ = 3 s is $x_{1}$ = 9 m

We need to find the value of the constant k

The relation between the velocity and the displacement in a particular

time is x = $\int\ {v_{x} } \, dt$

Remember in integration we add power by 1 and divide the expression

by the new power

→ x = $\int\ {kt^{2} } \, dt=\frac{1}{3}kt^{3}+c$

c is the constant of integration to find it substitute the initial value of x

and t in the equation of x

→ $t_{0}$ = 0 , $x_{0}$ = -9 m

→ -9 = $\frac{1}{3}$ k (0)³ + c

→ -9 = c

Substitute the value of c in the equation of x

→ x = $\frac{1}{3}$ k t³ - 9

To find k substitute the values of $t_{1}$ = 3 s , $x_{1}$ = 9 m

→ 9 = $\frac{1}{3}$ k (3)³ - 9

→ 9 = $\frac{1}{3}$ (27) k - 9

→ 9 = 9 k - 9

Add 9 to both sides

→ 18 = 9 k

Divide both sides by 9

→ k = 2

The value of the constant k is 2

5 0

3 years ago

Paula ran a total of 72meters directly toward school at a constant velocity. She ran one-third of that distance in 8seconds. Wha

Nezavi [6.7K]

Answer:

3 meters per second

Explanation:

72 divided by 3= 24 meters in 8 seconds

24/8= 3, so 3 meters per second

3 0

3 years ago

Light and sound waves both share what characteristic?

Phoenix [80]

Answer: (Light and sound both require a medium in which to travel)

Explanation: Sound and light always have the means to travel and get somewhere as fast as possible. Light is always faster than sound but it does not matter because they both almost always get where they want.

Part 2. light was composed of particles or waves, a wave-particle dual nature soon was found to be characteristic of electrons as well. The evidence for the description of light as waves was well established at the turn of the century when the photoelectric effect introduced firm evidence of a particle nature as well. basically when light hits a metal object . :)