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Nataliya [291]
3 years ago
7

5. The starter phase of a fitness program is important because it A. gives a person the opportunity to discover the exercises th

at work best for his or her needs. B. ensures that a person sticks with a certain exercise regimen. C. allows a person to lose a lot of weight quickly. D. makes running easier.
Physics
1 answer:
Orlov [11]3 years ago
4 0

Answer:

The starter phase of a fitness program is important because gives a person the opportunity to discover the exercises that work best for his or her needs. - A.

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a pulley is assumed massless and frictionless and rotates freely about its axle. the blocks have masses m1=40g and a block m2= 2
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The magnitude of acceleration of a block m₂ is 0.05 m/s² and the tension in the cord is 0.01 N.

Given:

mass of block 1, m₁ = 40 gm = 40×10⁻³ kg

mass of block 2, m₂ = 20 gm = 20×10⁻³ kg

Applied force, F = 0.03 N

Calculation:

Consider the free-body diagram of the system as shown below. Using Newton's second law of motion we get:

F = ma

where F is the applied force

            m is the total mass of the system

            a is the acceleration of block 2 (as it is pulled by horizontal force)

From the above equation we get:

0.03 N = (m₁+m₂) a

⇒ a = (0.03 N) / (m₁+m₂)

⇒ a = (0.03 N) / (40×10⁻³ kg + 20×10⁻³ kg)

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Now, from the free-body diagram of block 2 as shown in figure 3, we get:

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∑Fₓ = 0

∴ T = m₂ a

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T = (20×10⁻³ kg) × (0.5 m/s²)

  = 0.01 N

Therefore, the acceleration of block 2 due to the applied horizontal force is 0.5 m/s² and the tension in the cord is 0.01 N.

Learn more about tension here:

<u>brainly.com/question/13397436</u>

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