Net force problem pretty simple

Click For Summary
SUMMARY

The discussion focuses on calculating the net force acting on Ian and the elevator system, given Ian's weight of 646 N and an apparent weight of 711 N while in the elevator. The combined mass of the system is 1050 kg. The correct approach involves using the equation for apparent weight in an accelerating lift, Wapp = n(g ± a), where 'a' represents the elevator's acceleration. The user is guided to first determine the elevator's acceleration before calculating the net force on the system.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Familiarity with the concept of apparent weight
  • Knowledge of basic physics equations involving force and mass
  • Ability to perform calculations involving acceleration due to gravity (9.8 m/s²)
NEXT STEPS
  • Calculate the acceleration of the elevator using the apparent weight equation
  • Apply Newton's second law to find the net force on the system
  • Explore examples of net force calculations in different scenarios
  • Review concepts related to forces in non-inertial reference frames
USEFUL FOR

Students studying physics, educators teaching mechanics, and anyone interested in understanding forces in accelerating systems.

jayced
Messages
20
Reaction score
0
When on the ground, Ian's weight is measured to be 646 N. When Ian is on an elevator, his apparent weight is 711 N. What is the net force on the system (Ian and the elevator) if their combined mass is 1050 kg?

I know that Fnet is the sum of all forces. I don't have any examples of this problem so I just summed that Fnet=646N+711N+(1050kg x 9.8m/s)

Am I on the right track at all?

Should I be using another equation?

Thanx
 
Physics news on Phys.org
Apparent weight in an accelerating lift is given by
Wapp = n(g + or - a), where a is the acceleration do the lift.
From the given values find the acceleration of the lift. From that find the net force on the system.
 

Similar threads

Calculating Net Force of 3 Blocks in an Elevator
  • · Replies 9 ·
Replies
9
Views
2K
Calculating Net Force on a Wheel: Magnitude and Direction | 0.350 m Radius
  • · Replies 4 ·
Replies
4
Views
2K
How is centripetal force involved here? (charged mass sliding down a conducting hemisphere)
  • · Replies 31 ·
2
Replies
31
Views
2K
Calculating Net Force and Friction: Understanding Newton's Laws of Motion
  • · Replies 9 ·
Replies
9
Views
3K
What is the mass of the Galaxy's core?
  • · Replies 10 ·
Replies
10
Views
2K
High School Understanding Newton's Third Law and the Net Force on Objects
  • · Replies 19 ·
Replies
19
Views
2K
Forces and Elevators: Free-Body Diagrams and Calculations
  • · Replies 9 ·
Replies
9
Views
7K
Which answer is correct? Grocery Bag Net Force Question
  • · Replies 10 ·
Replies
10
Views
8K
Action-Reaction Forces on an Elevator
  • · Replies 5 ·
Replies
5
Views
3K
Direction of Frictional Force in Relation to Net Non-Friction Forces
  • · Replies 9 ·
Replies
9
Views
3K