Calculate the following for a person whose mass on earth is 70 kg. Take
Person A is pushing a box towards the right. In which direction should her 5 friend apply force on the box so that it moves faster in the same direction.
Also, draw the force diagram for this situation. (1+1)
gravitational force on earth as 10 N/kg
i) weight on earth. (1)
ii) weight on planet Z whose gravitational field strength is 20 N/kg. (1) iii) mass on planet Z. (1)
Answers
Answer:
Our study thus far has been restricted to the analysis of single objects moving under the influence of Newton's laws. But what happens if there are two objects connected together in one way or another? For instance, there could be a tow truck hauling a car down a highway. How is such an analysis conducted? How is the acceleration of the tow truck and the car determined? What about the force acting between the tow truck and the car? In this part of Lesson 3, we will make an attempt to analyze such situations. We will find that the analysis is conducted in the same general manner as when there is one object - through the use of free-body diagrams and Newton's laws.
70/5 = 15
gravitational force =10n kg
weight on earth = 15×10÷5
answer = 30kg