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MASS & WEIGHT. Mass is a measure of the amount of matter (stuff) in an object. It is measured in kilograms (kg) Weight is a force and it is the pull of gravity acting on an object. It is measured in Newtons. Experiment. Collect a 20N spring balance and a set of 100 g masses. Predict the weight (force of gravity) on 100 g. Record this in the table.
Physical Science Mass and Weight. Use the following formula to solve for weight: Weight (W) = Mass (m) x gravity (g) W = mg. Mass is measured in kilograms (kg) Gravity on earth is a constant: 9.8 m/s2 Weight is measured in Newton’s (1 N = 1 kg m/s2) Answer the following questions – show ALL WORK and UNITS. 1. Define Mass –.
Mass is a measure of the amount of matter in an object. Mass is not related to gravity. The mass of an object does not change when it is moved from one place to another. Mass is commonly measured in grams or kilograms. Weight is a measure of the gravitational force between two objects.
Mass and weight. Normal force. Newton’s second law of motion. Friction force. Motion on the horizontal surface without friction force. The motion of two bodies with the same acceleration on the rough horizontal surface with the friction force.
Practice Problem Set F=ma FORCE = MASS x ACCELERATION Plug in the given values for Force/Mass/Acceleration to solve. Remember, mass is in kg - - force in in N (newtons) - - acceleration is in m/s 2 1. How much force is needed to accelerate a 66 kg skier at 2 m/sec 2? 2.
In previous chapters we modeled the force exerted by the earth on a particle of mass m by its weight w=mg, (5.17) with g the gravitational acceleration due to the earth. Referring to Problem 2 above, we can now easily evaluate this quantity by equating the weight with the gravitational force exerted by the earth at its surface. That is, Emg ...
A extremely common example of the accelerated motion type of problem is given in Ex. 4.3 (page 123). A sled of mass mis placed on a frictionless hill (inclined plane) which is at an angle with the horizontal. Find the acceleration of the mass down the hill. The forces acting on the block are: 1) The downward weight force W = mg exerted by gravity.
