Forces REVIEW Two forces 360 N and 120
- Slides: 20
Forces REVIEW
�Two forces, 360 N and 120 N are applied to a sled on a frictionless surface. �Determine how to achieve the maximum force? What would the net force be in that situation? �Determine how to achieve the minimum force? What would the net force be in that situation?
Answers �To achieve the MAXIMUM net force, apply the forces in the SAME direction giving a net force of 480 N. �To achieve the MINIMUM net force, apply the forces in OPPOSITE directions giving a net force of 240 N.
�Two blocks are placed on a horizontal surface and pulled by a rope to the right with a force of 15. 0 N. One of the blocks has a mass of 2. 0 kg and the other has a mass of 3. 0 kg. �What is the acceleration of the blocks if there is NO friction? �What is the acceleration of the blocks if there is a 5. 0 N frictional force?
Answers �No friction = 3 m/s 2 �With friction = 2 m/s 2
� Compare and contrast the following… �Thrust and Tension �Weight and Normal Force �Vector and Scalar
Answers �Thrust is the applied force from an engine or person and tension is the force applied by a rope, string or cable. �Weight is the downward force of gravity and normal force is the perpendicular upward force exerted by a surface. �Vectors have magnitude and direction and scalars only have magnitude.
� What is the net force acting on an object in equilibrium?
Answer �ZERO
� A child who weighs 75 N sits on a tire swing. If the tire weighs 65 N, what is the tension in the rope holding the tire swing up?
Answer � 140 N
� Define terminal velocity.
Answer �The constant velocity reached when weight equals friction due to air resistance (air drag).
�Draw free body diagrams for the following situations… �A bike accelerates on a horizontal road without friction. �A bike accelerates on a horizontal road with friction. �A coffee mug sits motionless on a table. �Two men push a car accelerating it to the right.
� An astronaut travels to the moon. His weight is ____ and his mass is _____.
Answers �Weight is LESS but mass is THE SAME.
� What is the weight of a truck that has a mass 9 of 1. 75 x 10 kg?
Answer � 1. 72 x 1010 N
� What is the weight of an elephant that has a mass of 975. 0 kg?
Answer � 9555 N
- 120*120 px
- 100+80+40
- 24 km/jam berapa dam/menit
- Deduce the resultant of two parallel forces
- What are some contact forces and some noncontact forces?
- Balanced forces and unbalanced forces venn diagram
- What are destructive forces
- Electric forces and fields concept review
- The forces shown above are
- Intermolecular forces vs intramolecular forces
- Intermolecular forces ranked
- Covalent bond intermolecular forces
- Draw a free body diagram of a bag of sugar being lifted
- Chapter 4 forces in one dimension
- Polarity and intermolecular forces
- Chapter review motion part a vocabulary review answer key
- Uncontrollable spending ap gov
- Narrative review vs systematic review
- Systematic review definition
- Narrative review vs systematic review
- A conflict is a struggle between two opposing force