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3 years ago

A machine has mechanical advantage 2 , what does it mean ?

Physics

1 answer:

Cerrena [4.2K]3 years ago

3 0

Answer:

The advantage gained by the use of a mechanism in transmitting force specifically : the ratio of the force that performs the useful work of a machine to the force that is applied to the machine.

Explanation:

0.5 times greater than the input force.

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A cart loaded with bricks has a total mass of 20.4 kg and is pulled at constant speed by a rope. The rope is inclined at 26.1 ◦

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Answer:

Normal force, N = 154.5 N

Explanation:

Given that,

Total mass of the cart, m = 20.4 kg

Angle of inclination, $\theta=26.1^{\circ}$

Distance moved, d = 20.1 m

The coefficient of kinetic friction between ground and cart is 0.6

The value of acceleration due to gravity, $g=9.8\ m/s^2$

Let N is the normal force exerted on the cart by the floor. It is given by :

$N=mg-T\ sin\theta$

$T\ cos\theta=\mu N$

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$T\ cos(26.1)=0.6 (20.4\times 9.8-T\ sin(26.1))$

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So, the normal force is :

$N=20.4\times 9.8-103.23\ sin(26.1)$

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So, the normal force exerted on the cart by the floor is 154.5 N. Hence, this is the required solution.

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A machine has mechanical advantage 2 , what does it mean ?​

A machine has mechanical advantage 2 , what does it mean ?