Calculations and FBDs

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1. Suzie has a mass of 54 kg. What is the force of gravity acting on Suzie as she sits on the earth? Remember your units!

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Calculations and FBDs - Quiz

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2. A race car with a mass of 700kg accelerates from rest at 10.0 m/s/s. The car has constant acceleration . What is the total unbalanced force acting on the car?

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3. For the helicopter above, calculate the force due to gravity acting on the helicopter. Use 10 N/kg for the gravitational constant.

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4. A truck with a total force of 4000 N accelerates at 2 m/s/s. What is the mass of the truck?

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5. A 5000 kg helicopter accelerates upward at 2 m/s/s. Calculate the net force acting on the helicopter.

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6. Calculate the net force acting on the box

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7. Which of the following is the best label for force A

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8. A person pushes on a very heavy box. The box does not move. Which two arrows in the diagrams below are Newton's 3rd law force pairs (equal and opposite) describing the interaction between the person and the box?

Explanation

Remember that the forces shown on a FBD are the forces acting ON the object represented by the dot. The pair is the box pushing on the person (1) and the person pushing on the box (4).

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9. Omar and Saya lean on each other.  Omar weighs 40kg and Saya weighs 60kg. Which one pushes harder on the other?

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10. Select all of the forces acting on the magnet suspended by rope over an iron table.

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Suzie has a mass of 54 kg. What is the force of gravity acting on...
A race car with a mass of 700kg accelerates from rest at 10.0 m/s/s....
For the helicopter above, calculate the force due to gravity acting on...
A truck with a total force of 4000 N accelerates at 2 m/s/s. What is...
A 5000 kg helicopter accelerates upward at 2 m/s/s. Calculate the net...
Calculate the net force acting on the box
Which of the following is the best label for force A
A person pushes on a very heavy box. The box does not move. Which two...
Omar and Saya lean on each other.  Omar weighs 40kg and Saya...
Select all of the forces acting on the magnet suspended by rope over...
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