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kipiarov [429]
1 year ago
11

Why is an object’s mass, rather than its weight, used to indicate the amount of matter it contains?.

Physics
1 answer:
saul85 [17]1 year ago
5 0

An object's mass, rather than its weight is used to indicate the amount of matter it contains because weight is defined as the amount of force due to an existing field (In most cases, gravitational field) that is experienced by the body. The weight of the same body can be different in different environments it's observed.

However, the mass of the body is the exact measure of the amount of matter contained in a body. Which is constant, regardless of the environment, or conditions the body is observed.

Hence, for real-world calculations and experimentation, the mass of the body is considered to represent the amount of matter it contains rather than its weight.

Learn more about mass here

brainly.com/question/19694949

#SPJ4

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A horizontal force is applied to a box with a mass equal to 5.5 kg, The graph shows the net force acting on a box as a function
tangare [24]

From the graph, net work done on the box and  the speed of the box when it reaches position x = 8.0 m are 28 Nm and 3.2 m/s respectively

From the question, these are the given parameters;

  • Mass M = 5.5 Kg
  • Position X = 0 to X = 8m

Part A

The net work done will be the area under the graph.

From position X = 2m to X = 8m gives us the shape of a trapezium.

A = 1/2( a + b )h

A = 1/2( 2 + 6 ) x 8

A = 8 x 4

A = 32 Nm

From X = 0 to X = 2 gives us the shape of a triangle.

A = 1/2bh

A = 1/2 x 2 x (-4)

A = -4 x 1

A = -4 Nm

Net Work done = 32 - 4

Net work done = 28 Nm

Part B

Applying the concepts of work and energy to solve for the speed of the box when it reaches position x = 8.0 m

Net Work done = 1/2mV^{2}

Substitute all the necessary parameters

28 = 1/2 x 5.5 x V^{2}

5.5V^{2} = 56

V^{2} = 56/5.5

V^{2} = 10.18

V = \sqrt{10.1818}

V = 3.19 m/s

Therefore, net work done on the box and  the speed of the box when it reaches position x = 8.0 m are 28 Nm and 3.2 m/s respectively

Learn more about work done here: brainly.com/question/8119756

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