3 years ago

Why can't speed ratio ever equal mechanical advantage?

1 answer:

6 0

Efficiency of a simple machine is the ratio of mechanical advantage and speed ratio.

If mechanical advantage = speed ratio then efficiency = 1
Which is impossible for a practical machine due to presence of frictional force which wastes some energy and thus lowers the output

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A cetain car weighs 25,000 N. Calculate the mass of the car.

Studentka2010 [4]

Answer:2500kg

Explanation:

Weight of car(w)=25000N

Acceleration due to gravity approximately(g) 10m/s^2

Mass=w/g

Mass=25000/10

Mass=2500kg

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3 years ago

nlexa [21]

Answer:

By using Pythagoras Formula

Explanation:

Measure the distance man is sliding. “It will be c”

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3 years ago

The particle of 2 velocities 10m/s due east and 12m/S in the direction 30N/E. What is the resultant velocity and the direction?

Paha777 [63]

Answer:

See below

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8 0

2 years ago

HELP ME PLEAASSEEE ILL MARK U THE BRAINLIEST

Alika [10]

Answer:

Gravitational energy and kinetic energy

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3 years ago

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Margaret [11]

$▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ { \huge \mathfrak{Answer}}▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪$

Let's Calculate the displacement :

we know that displacement is the shortest distance between two points (i.e final position - initial position). so here displacement :

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3 years ago